CN209830927U - A fixture for copper pipe external thread processing - Google Patents

Abstract

The utility model discloses a clamp for external thread processing of copper pipes, which has a base, and a fixed support, a first mobile support and a first chute are arranged on the same horizontal axis of the base, and the first mobile support is arranged on the same horizontal axis of the base. On the first chute; on the fixed bracket, a synchronous clamping mechanism is installed; on the first mobile bracket, a bearing and a secondary guide post are provided; on the base, a second mobile bracket is also provided, and the second The mobile stand is provided with a pipe holder. The jig for external thread processing of copper pipes is easy to use, can hold copper pipes of various specifications and lengths, has a wide range of applications, and has stable and firm clamping, good axial support, and less deformation during the processing of copper pipes.

Description

A fixture for copper pipe external thread processing

technical field

The utility model relates to the technical field of clamps, in particular to a clamp for external thread processing of copper pipes.

Background technique

Copper pipe tapping is a common processing method in mechanical processing. Before tapping, the parts to be processed need to be fixed, and then the parts to be processed need to be tapped. In recent years, with the development of machine tool technology, machine tool turning and milling are gradually used to process threads, so professional copper pipe thread processing fixtures are required.

For example, the Chinese utility model patent (publication number CN205008875U) disclosed a fixture for tapping external threads in 2015, including a clamp body and a back plate, and the back plate is vertically fixed on the top of the clamp body, and also includes guide posts, so The outer surfaces of both ends of the guide post are provided with threads, one end of the guide post is inserted in the hole of the backboard and fixed by a nut, and the other end of the guide post is also screwed with a fixing nut. The jig for tapping external threads has a simple structure and can tap external threads for pipe parts. However, in the process of processing, the horizontality of the pipe is not guaranteed, and it is prone to deformation, and it is only fixed by bolts, and the pipe may rotate relative to the fixture, making the tapped thread inaccurate, especially when processing long copper pipes. When threaded, the copper tube lacks support, the axial direction is easy to jump, easy to deform, and the scrap rate is high.

In addition, because the copper tube is soft, the clamps are not synchronized when clamping, and the copper tube is easily deformed due to uneven force; and for copper tubes of different lengths and diameters, multiple sets of clamps need to be prepared, which is costly.

Contents of the invention

The purpose of the utility model is to provide a clamp for copper pipe external thread processing aiming at the problems existing in the prior art.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A fixture for copper pipe external thread processing, which has a base, a fixed bracket, a first movable bracket and a first chute are arranged on the same horizontal axis of the base, and the bottom of the fixed bracket is fixed on one of the base One end of the first chute is close to the fixed bracket, and the other end extends to the edge of the other side of the base, the first mobile bracket is arranged on the first chute; the fixed bracket is installed above the There is a main shaft, and a synchronous clamping mechanism is installed on the end face of the main shaft facing the first mobile bracket; a secondary shaft is installed above the first mobile bracket, and a bearing is arranged on the end face of the secondary shaft facing the fixed bracket , the middle part of the bearing is provided with an auxiliary guide column fixed on the auxiliary shaft; the main shaft and the auxiliary shaft are on the same axis. The copper pipe is quickly clamped by the synchronous clamping mechanism on the main shaft, and the bearing and guide column on the auxiliary shaft further fix the copper pipe, so that both ends of the copper pipe are clamped. The simultaneous use of the main shaft and the auxiliary shaft ensures the levelness and accuracy of the copper pipe. Axial precision, when the copper tubes to be processed are of different lengths, just slide the first moving bracket and adjust the distance between it and the fixed bracket, then the copper tubes of different lengths can be clamped and fixed for external thread processing.

Specifically, the synchronous clamping mechanism includes a fixed disk fixed on the main shaft, a rotating disk coaxial with the fixed disk, and the fixed disk is sleeved outside the rotating disk; There are several radial chutes, each of which is provided with a clamp arm, the side of the clamp arm is a rack surface, and the end of the clamp arm is provided with an arc-shaped chuck; There are a plurality of gear shafts meshing with the rack surface, the gear shafts are installed on the rotating disk, and the rotating disk is provided with a ring gear that cooperates with the gear shafts. The clamp arms are arranged in one-to-one correspondence. Wherein, the clamp arm has a sliding end, and the end of the sliding end is located in a radial sliding groove, and a fixing block and a limiting block are arranged in the sliding groove.

The middle part of one side of the rotating disk provided with the gear shaft is provided with a spherical protrusion. Copper pipes of different diameters can be supported on the spherical protrusion at any time. The middle part of the other side of the rotating disk is connected to a motor through a transmission shaft. It is more convenient and easy to control by driving the rotating disk to rotate through the motor.

The ring gear on the rotating disk drives all the gear shafts to rotate in one direction synchronously, and drives all the clamping arms to move synchronously in the radial direction to realize the clamping and loosening of the copper pipe. The synchronous clamping mechanism enables the clamping arm to clamp the outer wall of the copper pipe by applying a clamping force at the same time, so that the outer wall of the copper tube is evenly stressed and not easily deformed, and the clamping arm can move synchronously in the radial direction, and can clamp pipes of different diameters. Copper pipes, no need to prepare multiple sets of fixtures, saving costs. In addition, the arc-shaped collet is more suitable for clamping the pipe wall, which increases the force range and clamping range of the pipe wall, and makes the copper pipe clamp more firmly.

Specifically, the base is also provided with a second chute parallel to the first chute, a second mobile bracket is installed on the second chute, and the second mobile bracket has a vertical part and a horizontal part, the end of the horizontal part is provided with a pipe holder, the pipe holder is located directly above the first chute, and the pipe holder is used to support the copper pipe. As the processing progresses, slide the second moving bracket so that the tube support is always near the area to be processed of the copper tube, provide axial support for the copper tube, and reduce the axial deformation of the copper tube, especially Especially when processing longer copper tubes, the effect is remarkable, and the number of second movable brackets can be appropriately increased according to the length of the copper tubes to increase the axial support for the copper tubes.

Further, there are several grooves on the inner surface of the pipe holder, and several balls are embedded in the grooves. The setting of the ball is convenient for the pipe holder to slide along the outer wall of the copper pipe, and it is convenient to adjust the supporting part at any time according to the progress of the processing.

Specifically, an oblique stay plate or several oblique stay rods are arranged between the vertical part and the horizontal part, and the oblique stay plates or oblique stays play the role of enhancing the strength of the horizontal part and stabilizing the second mobile bracket; The pipe support is semicircular, the radian of its inner surface is the same as the outer circle of the copper tube, the length of the pipe support is greater than the width of the horizontal part, and the vertical height of the pipe support is the same as that of the copper tube. Tube clamping heights are the same. The semi-circular tube support fits the outer ring of the copper tube to ensure that it can just support the copper tube and has a wrapping effect on the copper tube, and does not affect the tube support sliding with the bracket, so that the position of the support can be adjusted at any time .

Specifically, the bearing is a bearing with a seat, which is directly connected to the auxiliary shaft through bolts, and different types of bearings can be used according to copper pipes with different pipe diameters, and the bearing does not directly contact the auxiliary guide column. The auxiliary shaft and the auxiliary guide column play the role of guiding and positioning, so that the copper pipe is kept horizontal, and the bearing can make the copper pipe rotate with the main shaft without breaking away from the auxiliary shaft.

Specifically, the diameters of the auxiliary guide posts are all smaller than the inner diameter of the copper pipe, so as to ensure that the copper pipe can be inserted into the auxiliary guide post normally, and the ends of the auxiliary guide posts are all tapered, which makes it easy to Quasi nozzle, more convenient to operate.

Specifically, the first chute is a "T"-shaped slot, and the lower part of the first mobile bracket is provided with a sliding limit block and a positioning block; the second chute is also set as a "T"-shaped slot, so The bottom of the second moving bracket is also provided with a sliding limit block and a positioning block.

Specifically, the fixing bracket is fixed on the base by means of bolts or welding, and a rib plate is also provided between the side of the fixing bracket and the base, so that the fixing bracket is firmly fixed on the On the base, avoid the shaking of the fixing bracket and enhance the stability of the copper tube fixing.

When using this jig for external thread processing of copper pipes, put one end of the copper pipe to be processed on the spherical protrusion, control the motor to drive the rotating disk to rotate counterclockwise, and the ring gear on the rotating disk will rotate counterclockwise accordingly. Thereby driving all the gear shafts to rotate counterclockwise, and the gear on the upper part of each gear shaft drives each clamping arm to move towards the copper pipe at the same time until the copper pipe is clamped; move the first moving bracket to a suitable position, and place the The other end of the copper tube is connected to the bearing and is sleeved on the secondary guide column; at this time, the second mobile bracket is moved, and the copper tube is supported by a tube bracket to keep the copper tube axially stable. The external thread processing of the copper pipe can be started, and during the processing, the second mobile support is moved in real time to support different parts of the copper pipe.

Compared with the prior art, the beneficial effects of the utility model are: 1. The clamp for external thread processing of copper pipes is easy to use, and the movable bracket and synchronous clamping mechanism enable the clamp to clamp copper tubes of various specifications, which is suitable for Wide range; 2. The arc-shaped chuck is more suitable for the clamping of copper pipes. It is used in conjunction with each clamping arm to make the clamping force area larger and more uniform, avoiding deformation of the copper tube caused by clamping. The effect is better and firmer; 3. Both ends of the copper tube are provided with support and clamping, which ensures the accuracy of the horizontal axis during copper tube processing and ensures the axial precision; 4. The setting of the tube holder is further for the copper tube The axial direction provides support, reduces axial runout, and ensures the accuracy of copper pipe thread processing.

Description of drawings

Fig. 1 is the schematic diagram of the main view structure of the clamp for external thread processing of copper pipes of the present invention;

Fig. 2 is the structural schematic diagram of the top view of the jig for processing copper pipe external thread of the utility model;

Fig. 3 is a structural schematic diagram of the synchronous clamping mechanism of the fixture for copper pipe external thread processing of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of a-a sectional structure of the clamp synchronous clamping mechanism for copper pipe external thread processing of the present invention;

Fig. 5 is a schematic structural diagram of the second mobile bracket of the clamp for external thread processing of copper pipes of the present invention;

Fig. 6 is a structural schematic diagram of the chute of the fixture chute for external thread processing of copper pipes of the present invention;

In the figure: 1, base; 2, fixed bracket; 3, first mobile bracket; 4, first chute; 5, main shaft; 6, synchronous clamping mechanism; 601, fixed disc; 602, rotating disc; Groove; 604, clip arm; 605, rack surface; 606, gear shaft; 607, collet; 608, ring gear; 7, protrusion; 8, auxiliary shaft; 9, bearing; 10, auxiliary guide column; 11, The second chute; 12, the second mobile bracket; 1201, the vertical part; 1202, the horizontal part; 13, the tube holder; 1301, the ball; 14, the rib.

Detailed ways

The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientations or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

As shown in Fig. 1 and Fig. 2, a clamp for external thread processing of copper pipe has a base 1, and a fixed bracket 2, a first movable bracket 3 and a first chute 4 are arranged on the same horizontal axis of the base 1 , the bottom of the fixing bracket 2 is fixed on one side of the base 1, one end of the first chute 4 is close to the fixing bracket 2, and the other end extends to the other side edge of the base 1, the first chute 4 A mobile support 3 is arranged on the first chute 4; a main shaft 5 is installed above the fixed support 2, and a synchronous clamping mechanism 6 is installed on the end surface of the main shaft 5 facing the first mobile support 3, so that A protrusion 7 is provided in the middle of the synchronous clamping mechanism 6; a secondary shaft 8 is installed above the first moving bracket 3, and a bearing 9 is arranged on the end surface of the secondary shaft 8 facing the fixed bracket 2, and the bearing 9 The middle part is provided with an auxiliary guide column 10 fixed on the auxiliary shaft 8; the main shaft 5 and the auxiliary shaft 8 are on the same horizontal axis.

As shown in Figures 3 and 4, the synchronous clamping mechanism 6 includes a fixed disk 601 fixed on the main shaft, a rotating disk 602 coaxial with the fixed disk 601, and the fixed disk 601 is sleeved on the Outside the rotating disk 602; the fixed disk 601 is evenly distributed with 6 radial chute 603, each of the chute 603 is provided with a clamp arm 604, the side of the clamp arm 604 is a rack surface 605 , the end of the clamp arm 604 is provided with an arc-shaped chuck 607; the rotating disk 602 is provided with 6 gear shafts 606 meshing with the rack surface 605, and the gear shafts 606 are installed on the rotating disk 602. On the disk 602 , the rotating disk 602 is provided with a ring gear 608 that cooperates with the gear shaft 606 , and the gear shaft 606 is arranged in a one-to-one correspondence with the clamping arms 604 . Wherein, the clip arm 604 has a sliding end, and the end of the sliding end is located in a radial sliding slot 603, and the sliding slot 603 is provided with a fixed block and a limiting block.

The rotating disc 602 is provided with a spherical protrusion 7 in the middle of one side of the gear shaft 606. Copper pipes of different diameters can be supported on the spherical protrusion 7 at any time. The middle part of the other side of the rotating disc 602 A motor is connected through the transmission shaft, and the rotation of the rotating disc driven by the motor is more convenient and easy to control.

The ring gear 608 on the rotating disk 602 drives the six gear shafts 606 to rotate in one direction synchronously, and drives all the clamping arms 604 to move synchronously in the radial direction, so as to realize the clamping and loosening of the copper pipe.

Specifically, the base 1 is also provided with a second chute 11 parallel to the first chute 4, and a second mobile bracket 12 is installed on the second chute 11, and the second mobile bracket 12 It has a vertical part 1201 and a horizontal part 1202, and the end of the horizontal part 1202 is provided with a tube support 13, which is located directly above the first chute 4, and the tube support 13 is used to support the copper pipe.

There are several grooves on the inner surface of the tube support 13, and several balls 1301 are embedded in the grooves. The setting of the ball 1301 facilitates the sliding of the pipe holder 13 along the outer wall of the copper pipe, and it is convenient to adjust the position of the support at any time according to the progress of the processing.

Specifically, a number of diagonal stay rods are arranged between the vertical part 1201 and the horizontal part 1202, and the diagonal stays can enhance the strength of the horizontal part 1202 and stabilize the second mobile bracket 12; Holder 13 is semicircular, and the radian of its inner surface is the same as the outer circle radian of described copper pipe, and the length of described pipe holder 13 is greater than the width of described horizontal portion 1202, and the vertical height of described pipe holder 13 is the same as that of described pipe holder. The copper tubes are clamped at the same height. The semicircular tube support 13 is adapted to the outer ring of the copper tube, so as to ensure that the copper tube can be just held, and has a wrapping effect on the copper tube, and does not affect the sliding of the tube support 13 with the second mobile bracket 12, It is convenient to adjust the position of the support at any time.

Specifically, the bearing 9 is a bearing with a seat, which is directly connected to the auxiliary shaft 8 through bolts, and different types of bearings can be used according to copper pipes with different pipe diameters, and the bearing does not directly contact the auxiliary guide column 10. . The auxiliary shaft 8 and the auxiliary guide column 10 play a role of guiding and positioning, so that the copper pipe is kept horizontal, and the bearing can allow the copper pipe to rotate with the main shaft without breaking away from the auxiliary shaft.

Specifically, the diameters of the secondary guide columns 10 are all smaller than the inner diameter of the copper tube, so as to ensure that the copper tube can be inserted into the secondary guide column 10 normally, and the ends of the secondary guide columns are all tapered structures, so that when inserted Easy to align nozzle, more convenient operation.

Specifically, as shown in Figure 6, both the first chute 4 and the second chute 11 are "T" shaped grooves, and the first mobile bracket 3 and the second mobile bracket 12 are in the "T" shape There is a lap on the T”-shaped slot, and the position of the two mobile brackets can be fixed by bolts.

Specifically, the fixed bracket 2 is directly welded on the base 1, so that the fixed bracket 2 is firmly fixed on the base 1 to avoid shaking of the fixed bracket. Ribs 14 are also provided between the bases 1 to further strengthen and stabilize the fixing bracket 2, thereby enhancing the stability of the copper tube fixing.

When using this fixture for processing copper pipe external threads, put one end of the copper pipe to be processed on the spherical protrusion 7, control the motor to drive the rotating disk 602 to rotate counterclockwise, and the ring gear 608 on the rotating disk 602 will follow Rotate counterclockwise, thereby driving the 6 gear shafts 606 to rotate counterclockwise, and the gear on the top of each gear shaft 606 drives each clamping arm 604 to move to the copper pipe at the same time until the copper pipe is clamped; move the first Move the bracket 3 to a suitable position, connect the other end of the copper tube to the bearing 9 and put it on the secondary guide column 10; at this time, move the second mobile bracket 12, and use the tube holder 13 to support the copper tube, Keep the copper tube axially stable. The external thread processing of the copper pipe can be started, and during the processing, the second mobile support 12 is moved in real time to support different parts of the copper pipe. When the processing of the copper tube is completed, it is only necessary to rotate the rotating disc 602 clockwise, so that the gear shaft 606 rotates clockwise to drive the clamping arm 604 to move in the reverse direction in the radial direction, and loosen the copper tube.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (10)

1. A clamp for processing external threads of a copper pipe is provided with a base and is characterized in that a fixed support, a first movable support and a first sliding groove are arranged on the same horizontal axis of the base, the bottom of the fixed support is fixed on one side of the base, one end of the first sliding groove is close to the fixed support, the other end of the first sliding groove extends to the edge of the other side of the base, and the first movable support is arranged on the first sliding groove; a main shaft is arranged above the fixed support, and a synchronous clamping mechanism is arranged on the end face, facing the first movable support, of the main shaft; an auxiliary shaft is arranged above the first movable support, a bearing is arranged on the end face, facing the fixed support, of the auxiliary shaft, and an auxiliary guide column fixed on the auxiliary shaft is arranged in the middle of the bearing; the main shaft and the auxiliary shaft are on the same axis.

2. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the synchronous clamping mechanism comprises a fixed disk fixed on the main shaft and a rotating disk coaxial with the fixed disk, and the fixed disk is sleeved outside the rotating disk; a plurality of radial chutes are uniformly distributed on the fixed disc, each chute is provided with a clamping arm, the side surface of each clamping arm is a rack surface, and the end part of each clamping arm is provided with an arc-shaped chuck; the gear rack is characterized in that a plurality of gear shafts meshed with the rack surfaces are arranged on the rotating disc, the gear shafts are installed on the rotating disc, gear rings matched with the gear shafts are arranged on the rotating disc, and the gear shafts and the clamping arms are arranged in a one-to-one correspondence mode.

3. The clamp for processing the external thread of the copper pipe as recited in claim 2, wherein a spherical protrusion is arranged in the middle of one surface of the rotating disc, on which the gear shaft is arranged, and a motor is connected to the middle of the other surface of the rotating disc through a transmission shaft.

4. The clamp for machining the external thread of the copper pipe according to claim 1, wherein a second sliding groove parallel to the first sliding groove is further formed in the base, a second moving support is mounted on the second sliding groove and provided with a vertical portion and a horizontal portion, a pipe support is arranged at the end of the horizontal portion and located right above the first sliding groove, and the pipe support is used for supporting the copper pipe.

5. The fixture for processing the external thread of the copper pipe as recited in claim 4, wherein a plurality of grooves are formed on the inner surface of the pipe bracket, and a plurality of balls are embedded in the grooves.

6. The clamp for processing the external thread of the copper pipe as recited in claim 4, wherein an inclined pulling plate or a plurality of inclined pulling rods are arranged between the vertical part and the horizontal part; the pipe bracket is semicircular, the radian of the inner surface of the pipe bracket is the same as that of the outer ring of the copper pipe, the length of the pipe bracket is larger than the width of the horizontal part, and the vertical height of the pipe bracket is the same as the clamping height of the copper pipe.

7. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the bearing is a bearing with a seat and is directly connected with the auxiliary shaft through a bolt.

8. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the diameters of the auxiliary guide posts are all smaller than the inner diameter of the copper pipe, and the end parts of the auxiliary guide posts are all in a tapered structure.

9. The fixture for processing the external thread of the copper pipe as recited in claim 1, wherein the first sliding groove is a T-shaped groove, and a sliding limiting block and a positioning block are arranged in the T-shaped groove.

10. The clamp for processing the external thread of the copper pipe as recited in claim 1, wherein the fixing bracket is fixed on the base in a bolt or welding manner, and a rib plate is further arranged between the side edge of the fixing bracket and the base.